临近高层建筑施工对已建地铁区间隧道及车站的影响分析
Analysis of the Impact of Adjacent High-Rise Building Construction on Existing Subway Tunnel Segments and Stations
周成涛 1乔宇 1李志涛 2高僖2
作者信息
- 1. 重庆市勘测院,重庆 401121
- 2. 重庆科技大学建筑工程学院,重庆 401331
- 折叠
摘要
临近高层建筑基坑开挖及新建结构等施工过程产生的卸载和加载作用,会对临近地铁区间隧道和车站的受力和变形产生影响.该文以重庆市某高层建筑施工与邻近的轨道车站和区间隧道工程为依托背景,通过三维数值模拟仿真,分析了高层建筑不同施工阶段对邻近地下结构产生的受力和变形影响.结果表明:(1)引起整体隧道结构变形的主要因素是基坑开挖,其次是新修建筑的加载作用;(2)隧道整体结构在建设活动中有先向基坑侧靠拢变形并上浮的趋势,随着后续施工会发生逐渐回弹的变形规律.
Abstract
The unloading and loading effects generated during the excavation of foundation pits and the construction of new structures adjacent to high-rise buildings can significantly impact the stress and deformation of neighboring subway tunnel segments and stations.This paper takes the construction of a high-rise building adjacent to a rail transit station and tunnel segments in Chongqing as the research background.Through three-dimensional numerical simulation,the stress and deformation effects of different construction stages of the high-rise building on the adjacent underground structures are analyzed.The results show that:(1)The main factor causing deformation of the overall tunnel structure is the excavation of the foundation pit,followed by the loading effect of the newly constructed building;(2)The overall tunnel structure tends to deform towards the foundation pit side and float up during construction activities,followed by a gradual rebound deformation pattern as subsequent construction progresses.
关键词
高层建筑/建筑施工/地铁隧道/数值模拟Key words
High-Rise Building/Construction/Subway Tunnel/Numerical Simulation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据